WoW Achievements — Browse All Achievements
Track all 8,600+ World of Warcraft achievements. Browse by expansion or category — Dungeons & Raids, Quests, Exploration, PvP, Professions, Reputation, and more. Sync your character to see completion progress.
Browse achievements from all expansions including The War Within, Midnight, Dragonflight, Shadowlands, and Classic. Find guides for Glory of the Raider, meta-achievements, PvP achievements, exploration, and more. Track your achievement points and completion progress via Battle.net.
Overzealous
Defeat Imperial Vizier Zor'lok while every member of the raid is afflicted with the Zealous Parasite debuff.
Overzealous requires you to defeat Imperial Vizier Zor'lok while every member of the raid has the Zealous Parasite debuff, which is applied by looting tiny glowing insects found at the base of the pillars in his encounter area.
Enter the encounter
Enter the Heart of Fear raid and engage Imperial Vizier Zor'lok. The Zealous Parasite insects spawn at the base of the pillars as soon as the encounter begins — they do not wait until the final phase.
Locate and loot the bugs
Look for tiny glowing insects at the base of each pillar. In 10-player mode, 8 bugs spawn total, with 2 near each pillar. Loot a bug to gain the Zealous Parasite debuff, which reduces movement speed by 30% and persists for the entire fight, even through death.
Manage bug respawns
Because only 8 bugs are available at once in 10-player mode and 10 players need the debuff, have the first two players grab bugs early — ideally on the way to the third platform — so the bugs have time to respawn for the remaining players.
Confirm debuffs then kill
Once every raid member has the Zealous Parasite debuff, burn Zor'lok down. To receive the achievement credit, you must be alive and not mind controlled at the moment he dies — every other player only needs to have the debuff, even if dead.
Tips
This achievement can be completed solo at a high item level — a 704 hunter has confirmed completing it without a group.
Assign players to specific pillars before the pull so no one wastes time running across the room searching for bugs.
If running with more than 8 players, coordinate who picks up bugs first and who waits for the respawn wave to avoid confusion.